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authorThomas Gleixner <tglx@linutronix.de>2010-09-07 14:33:43 +0000
committerThomas Gleixner <tglx@linutronix.de>2010-10-12 17:36:10 +0200
commit5b8c4f23c54edda640a4850bc9b81dee70acb525 (patch)
treea09362e849e00625e2a37520e3f81a5ace00dee4
parent8192b1f6b1a46b33213b993471356495a93ffc70 (diff)
printk: Make console_sem a semaphore not a pseudo mutex
It needs to be investigated whether it can be replaced by a real mutex, but that needs more thought. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christoph Hellwig <hch@infradead.org> LKML-Reference: <20100907125057.179587334@linutronix.de>
-rw-r--r--kernel/printk.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/printk.c b/kernel/printk.c
index 8fe465ac008a..2531017795f6 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -85,7 +85,7 @@ EXPORT_SYMBOL(oops_in_progress);
* provides serialisation for access to the entire console
* driver system.
*/
-static DECLARE_MUTEX(console_sem);
+static DEFINE_SEMAPHORE(console_sem);
struct console *console_drivers;
EXPORT_SYMBOL_GPL(console_drivers);
@@ -556,7 +556,7 @@ static void zap_locks(void)
/* If a crash is occurring, make sure we can't deadlock */
spin_lock_init(&logbuf_lock);
/* And make sure that we print immediately */
- init_MUTEX(&console_sem);
+ sema_init(&console_sem, 1);
}
#if defined(CONFIG_PRINTK_TIME)